白龙湖水质模拟预测及保护方案的研究

Study on simulation forecast of water quality and protection scheme in Bailong lake

在分析白龙湖坝前区的例行水质监测数据的基础上,构建白龙湖水域二维水流水质数学模型,对白龙湖的氨氮、总氮、总磷、COD等水质指标进行模拟分析,预测规划期内的白龙湖水质变化趋势。结果表明:2016年白龙湖区域按目前的排放,白龙湖总氮、总磷等水质指标将继续下降,无法满足水功能要求,其中总磷降为IV类标准。根据白龙湖流域的现有状况,提出社会经济调控、污染源防治工程、生态保育工程、生态环境监管工程等方案,提出削减的污染量计划,再次预测水质,各项指标稳中有升,其中总磷从IV类提高到Ⅱ类。以上4个方案的实施对于保护白龙湖的现有水质具有建设性的意义,同时对于同类型的湖泊保护起到了很好的借鉴作用。

Based on the analysis of routine monitoring data of water quality in the front of Bailong lake dam,the paper constructed a two-dimensional water quality mathematical model for Bailong lake waters so as to simulate ammonia nitrogen , total nitrogen , total phosphorus , COD water quality of Bailong lake ,and predict and analyze the change trend of water quality during the planning period .The results show that water quality indexes of total nitrogen and total phosphorus will continue to decline in 2016 .According to the condition of current emissions in Bailong lake area ,it proposed some schemes such as the social and economic control , prevention and control engineering of pollution source , ecological conservation , ecolog-ical environment regulation engineering ,and decreasing plan of pollutant .It predicted water quality , ev-ery indicator was steadly enhanced ,especially the total phosphor would enhance from class IV to class II . The implementation of the above four programs for the protection of existing water quality in the Bailong Lake has important significance , which has a very good reference for the protection of the similiar type of lake.